CN1775681A - Method for preparing desulfurizer magnesium oxide and sulfur dioxide utilizing desulfurizing by-product magnesium sulfite by magnesium process - Google Patents
Method for preparing desulfurizer magnesium oxide and sulfur dioxide utilizing desulfurizing by-product magnesium sulfite by magnesium process Download PDFInfo
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- CN1775681A CN1775681A CN 200510127599 CN200510127599A CN1775681A CN 1775681 A CN1775681 A CN 1775681A CN 200510127599 CN200510127599 CN 200510127599 CN 200510127599 A CN200510127599 A CN 200510127599A CN 1775681 A CN1775681 A CN 1775681A
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- Prior art keywords
- magnesium
- sulfite
- magnesium oxide
- sulfur dioxide
- sulfurous gas
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- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 30
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000006227 byproduct Substances 0.000 title claims abstract description 20
- 239000011777 magnesium Substances 0.000 title claims abstract description 19
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 title claims description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 18
- 229910052749 magnesium Inorganic materials 0.000 title claims description 18
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title abstract 12
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 33
- 235000003599 food sweetener Nutrition 0.000 claims description 11
- 239000003765 sweetening agent Substances 0.000 claims description 11
- 230000002829 reductive effect Effects 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000012717 electrostatic precipitator Substances 0.000 claims description 3
- 235000011194 food seasoning agent Nutrition 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 description 17
- 230000023556 desulfurization Effects 0.000 description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a method for preparing desulfurizing agent magnesia and sulfur dioxide by Mg method desulphurizing byproduct magnesium sulfite, characterized in the following processing steps of: (1) drying and crushing the byproduct magnesium sulfite from a desulphurizing system down to below 3 mm particle size; (2) baking the crushed magnesium sulfite and keeping the in-furnace temperature at 700 deg.C-90 deg.C for continuously baking so as to continuously resolve the material into magnesia and sulfur dioxide and obtain the desulfurizing agent magnesia and sulfur dioxide-rich furnace gas, which is compressed and bottled into sulfur dioxide products. The advantages are that it largely reduces operating cost of Mg-method desulphurization and the produced sulfur dioxide can be used to produce vitriol.
Description
Technical field
The invention belongs to the method for producing sweetening agent magnesium oxide and sulfurous gas, particularly a kind of by product magnesium sulfite of wet type magnesium method desulfurization that utilizes is produced desulfurization absorbent magnesium oxide, generates the method for sulfurous gas simultaneously.
Background technology
It is the country of main primary energy source with coal that China is one, and in the long period from now on, power industry can not change based on the energy structure of coal, and thermal power plant generates electricity as main fuel with coal.The boiler of power plant discharged flue gas contains SO
2, flue dust and HCl, HF, SO
3Deng, very serious to the pollution of environment.Along with the increasing of China environmental protection dynamics, flue gas desulfurization technique is applied at home and develops.In recent years, magnesium oxide has obtained promoting comparatively widely as a kind of new sweetening agent.Magnesium sulfite need be used to it as the by product of magnesium method desulfurization, so that resource reclaims.
At present, the method for usually conduct magnesium desulfurizing byproduct containing magnesium sulfite is to the desulfurization waste liquor aeration, makes sal epsom fertilizer.The magnesian preparation method of desulfurization absorbent is to adopt giobertite to become light calcined magnesia 800 ℃ of-900 ℃ of roastings, pulverizes.The preparation method of sulfurous gas is to adopt roasting sulphur or sulphur iron ore, generates sulfurous gas.Be and adopt ore to produce,, environment is all had pollution at roasting and process of lapping.
Summary of the invention
The objective of the invention is, utilize the by product magnesium sulfite of wet type magnesium method desulfurization to make starting material, generate sulfurous gas, generate the desulfurization absorbent magnesium oxide of magnesium method desulfurization simultaneously through roasting.Magnesium sulfite is sintered into magnesium oxide between 700 ℃-900 ℃, and discharge sulfurous gas, regenerated magnesium oxide can store and be reused for desulfurization absorbent, and sulfurous gas can be used to produce sulfuric acid, to improve the recycling of the waste liquid that is rich in magnesium sulfite that generates after the flue gas desulfurization.
Technical scheme of the present invention is that a kind of method of utilizing magnesium desulfurizing byproduct containing magnesium sulfite to produce sweetening agent magnesium oxide and sulfurous gas mainly comprises following processing step:
1. dry and broken, will be controlled in 8% by the water content of the next by product magnesium sulfite of magnesium method desulphurization system, adopt the oven dry of natural seasoning or roller dryer, with disintegrating apparatus magnesium sulfite is crushed to particle diameter 3mm,
2. roasting, magnesium sulfite after the fragmentation is mixed with an amount of reductive agent coke, send in the fluidizing reactor continuously, fluidizing reactor keeps 700 ℃ of-900 ℃ of continuous roastings of temperature in the stove, material is decomposed into sulfurous gas and magnesium oxide continuously, keep temperature equalisation in the stove, avoid magnesium oxide Yin Wendu too high and lose activity, influence its reuse effect.Go out furnace gases and separate through the two poles of the earth of cyclonic separator and electrostatic precipitator, reclaim in the furnace gas with magnesium oxide particle, mixes as sweetening agent with magnesium oxide after the roasting and to use, obtain the furnace gas of enrichment sulfurous gas simultaneously, compression is bottled, and becomes the sulfurous gas product.
Advantage of the present invention is, turn waste into wealth, utilize the by product magnesium sulfite of wet type magnesium method desulfurization to make starting material, produce the magnesium oxide desulfurization absorbent, reduced the pollution of sulfurous gas to atmospheric environment, the magnesium oxide that generates can be used further to desulfurization and absorb, and makes resource obtain recycle, greatly reduces the running cost of magnesium method desulfurization.The sulfurous gas of Sheng Chenging is the raw material of relieving haperacidity simultaneously, can be used for producing sulfuric acid.The present invention provides new approach for the processing of magnesium method desulfurizing byproduct, the recycling of the perfect by product that generates after the flue gas desulfurization.The by product magnesium sulfite prepares magnesium oxide and sulfurous gas after being applicable to Industrial Boiler flue gas desulfurization.
Description of drawings
Fig. 1 is the technical process that utilizes magnesium desulfurizing byproduct containing magnesium sulfite to produce sweetening agent magnesium oxide and sulfurous gas of the present invention.
Embodiment
As seen from Figure 1, a kind of method of utilizing magnesium desulfurizing byproduct containing magnesium sulfite to produce sweetening agent magnesium oxide and sulfurous gas mainly comprises following processing step:
1. dry and broken, the water content of the by product magnesium sulfite that will be come by magnesium method desulphurization system is controlled in 8%, adopts the oven dry of natural seasoning or roller dryer, with disintegrating apparatus with the magnesium sulfite crushing to grain below 3mm,
2. roasting, magnesium sulfite after the fragmentation is mixed with an amount of reductive agent coke, send in the fluidizing reactor continuously, fluidizing reactor keeps 700 ℃ of-900 ℃ of continuous roastings of temperature in the stove, material is decomposed into sulfurous gas and magnesium oxide continuously, keep temperature equalisation in the stove, avoid magnesium oxide Yin Wendu too high and lose activity, influence its reuse effect, go out furnace gases and separate with electrostatic precipitator the two poles of the earth through cyclonic separator, reclaim in the furnace gas with magnesium oxide particle, mix as sweetening agent with magnesium oxide after the roasting and to use, obtain the furnace gas of enrichment sulfurous gas simultaneously, the compression bottling becomes product.
Claims (2)
1, a kind of method of utilizing magnesium desulfurizing byproduct containing magnesium sulfite to produce sweetening agent magnesium oxide and sulfurous gas mainly comprises sinter process, it is characterized in that:
1. dry and broken, will be controlled in 8% by the water content of the next by product magnesium sulfite of magnesium method desulphurization system, adopt the natural seasoning oven dry, with disintegrating apparatus magnesium sulfite is crushed to particle diameter 3mm,
2. roasting, magnesium sulfite after the fragmentation is mixed with the reductive agent coke, send in the fluidizing reactor continuously, fluidizing reactor keeps 700 ℃ of-900 ℃ of continuous roastings of temperature in the stove, and material is decomposed into sulfurous gas and magnesium oxide continuously, goes out furnace gases and separates through the two poles of the earth of cyclonic separator and electrostatic precipitator, reclaim in the furnace gas with magnesium oxide particle, mix as the sweetening agent use with the magnesium oxide after the roasting, obtain the furnace gas of enrichment sulfurous gas simultaneously, the compression bottling becomes the sulfurous gas product.
2, the method for utilizing magnesium desulfurizing byproduct containing magnesium sulfite to produce sweetening agent magnesium oxide and sulfurous gas as claimed in claim 1 is characterized in that, magnesium sulfite is adopted the roller dryer oven dry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101275996A CN100404108C (en) | 2005-12-08 | 2005-12-08 | Method for preparing desulfurizer magnesium oxide and sulfur dioxide utilizing desulfurizing by-product magnesium sulfite by magnesium process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101275996A CN100404108C (en) | 2005-12-08 | 2005-12-08 | Method for preparing desulfurizer magnesium oxide and sulfur dioxide utilizing desulfurizing by-product magnesium sulfite by magnesium process |
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| CN1775681A true CN1775681A (en) | 2006-05-24 |
| CN100404108C CN100404108C (en) | 2008-07-23 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068885A (en) * | 2010-12-03 | 2011-05-25 | 中节能六合天融环保科技有限公司 | Process for drying, calcining and decomposing desulfurization side product magnesium sulfite |
| CN102101004A (en) * | 2011-01-26 | 2011-06-22 | 中节能六合天融环保科技有限公司 | Method for recovering magnesium oxide and byproduct sulfur dioxide by using indirect heating rotary roasting furnace |
| CN101624197B (en) * | 2008-07-07 | 2013-05-22 | 中石化宁波工程有限公司 | Technology for calcining and recycling magnesium desulfurizing byproduct containing magnesium sulfite |
| CN104028085A (en) * | 2014-05-22 | 2014-09-10 | 武汉钢铁(集团)公司 | Flue gas desulfurization technology based on iron ore sintering process |
| US10131546B2 (en) | 2014-12-03 | 2018-11-20 | Shanghui TONG | Apparatus and method for producing magnesium sulfate from coal-fired boiler flue gas |
| CN109052438A (en) * | 2018-07-12 | 2018-12-21 | 山东汇泰再生资源有限公司 | It is a kind of to prepare method of magnesium oxide using magnesium sulfite |
| CN109264752A (en) * | 2018-12-07 | 2019-01-25 | 山东大学 | The method and device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
| CN110921633A (en) * | 2019-10-30 | 2020-03-27 | 郑州轻工业学院 | Method for recycling byproducts of magnesium oxide wet flue gas desulfurization of power station |
| CN110980779A (en) * | 2019-12-17 | 2020-04-10 | 江苏联慧资源环境科技有限公司 | Recovery method of magnesium oxide desulfurizer |
| CN113813758A (en) * | 2021-10-14 | 2021-12-21 | 辽宁玖号科技有限公司 | Magnesium oxide-based desulfurizing agent and preparation method thereof |
| CN114808103A (en) * | 2022-05-05 | 2022-07-29 | 赵朔 | Method for preparing modified basic magnesium sulfate by using alkylated waste sulfuric acid and flue gas desulfurization product magnesium oxide |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2147059C (en) * | 1994-04-28 | 1999-08-10 | John W. College | Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation |
| JP3751340B2 (en) * | 1995-08-22 | 2006-03-01 | 東洋エンジニアリング株式会社 | Exhaust gas desulfurization method |
| US5614158A (en) * | 1995-10-20 | 1997-03-25 | Dravo Lime Company | Process for removing sulfur dioxide from gases and producing gypsum and purified magnesium hydroxide |
| US6572832B2 (en) * | 2001-03-27 | 2003-06-03 | Carmeuse North America Services, Inc. | Method of removing sulfur dioxide from a gaseous stream in a wet scrubbing unit |
| CN1220545C (en) * | 2002-10-22 | 2005-09-28 | 熊天渝 | Washing system for adding magnesia lime/lime rock for removing SO2 and producing gypsum simultaneously |
| CN1225405C (en) * | 2003-11-14 | 2005-11-02 | 天津市昌昊化工股份合作公司 | Magnesium sulfate production method using magnesium oxide and desulfurated waste fluid |
-
2005
- 2005-12-08 CN CNB2005101275996A patent/CN100404108C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624197B (en) * | 2008-07-07 | 2013-05-22 | 中石化宁波工程有限公司 | Technology for calcining and recycling magnesium desulfurizing byproduct containing magnesium sulfite |
| CN102068885A (en) * | 2010-12-03 | 2011-05-25 | 中节能六合天融环保科技有限公司 | Process for drying, calcining and decomposing desulfurization side product magnesium sulfite |
| CN102101004A (en) * | 2011-01-26 | 2011-06-22 | 中节能六合天融环保科技有限公司 | Method for recovering magnesium oxide and byproduct sulfur dioxide by using indirect heating rotary roasting furnace |
| CN104028085A (en) * | 2014-05-22 | 2014-09-10 | 武汉钢铁(集团)公司 | Flue gas desulfurization technology based on iron ore sintering process |
| CN104028085B (en) * | 2014-05-22 | 2017-01-18 | 武汉钢铁(集团)公司 | Flue gas desulfurization technology based on iron ore sintering process |
| US10131546B2 (en) | 2014-12-03 | 2018-11-20 | Shanghui TONG | Apparatus and method for producing magnesium sulfate from coal-fired boiler flue gas |
| CN109052438A (en) * | 2018-07-12 | 2018-12-21 | 山东汇泰再生资源有限公司 | It is a kind of to prepare method of magnesium oxide using magnesium sulfite |
| CN109264752A (en) * | 2018-12-07 | 2019-01-25 | 山东大学 | The method and device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
| CN109264752B (en) * | 2018-12-07 | 2023-10-03 | 山东大学 | Method and device for regenerating desulfurizing agent and simultaneously producing byproduct sulfur in magnesium desulfurization |
| CN110921633A (en) * | 2019-10-30 | 2020-03-27 | 郑州轻工业学院 | Method for recycling byproducts of magnesium oxide wet flue gas desulfurization of power station |
| CN110921633B (en) * | 2019-10-30 | 2021-05-28 | 郑州轻工业学院 | Method for recycling byproducts of magnesium oxide wet flue gas desulfurization of power station |
| CN110980779A (en) * | 2019-12-17 | 2020-04-10 | 江苏联慧资源环境科技有限公司 | Recovery method of magnesium oxide desulfurizer |
| CN113813758A (en) * | 2021-10-14 | 2021-12-21 | 辽宁玖号科技有限公司 | Magnesium oxide-based desulfurizing agent and preparation method thereof |
| CN114808103A (en) * | 2022-05-05 | 2022-07-29 | 赵朔 | Method for preparing modified basic magnesium sulfate by using alkylated waste sulfuric acid and flue gas desulfurization product magnesium oxide |
| CN114808103B (en) * | 2022-05-05 | 2024-04-09 | 大石桥市圣兴耐火材料有限公司 | Method for preparing modified basic magnesium sulfate by using alkylated waste sulfuric acid and magnesium oxide as flue gas desulfurization product |
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| CN100404108C (en) | 2008-07-23 |
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